VCI Spark 1408 3900Kv is a lightweight motor suitable for 3" drones and cinewhoops with a 4S battery. It weighs just 16.2g including 100mm 24AWG wires. The 14x8mm stator in a 9N12P configuration is complemented by rounded N52SH magnets, and the shaft has a diameter of 1.5mm.
At 16V with a GF D75-3 ducted propeller, it delivers up to 645g of thrust at a current draw of 21.9A. With a 3" GF 3016-3 propeller, it reaches 509g at 15.2A. The motor is mounted to the frame with four M2 screws on a 12mm pattern.
